Drill chuck



FIG. 1 is a perspective view of the top and one side of a drill chuck showing my new design;

FIG. 2 is a perspective view of the bottom and one side thereof;

FIG. 3 is a side elevational view of one side thereof;

FIG. 4 is a side elevational view of the opposite side thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a drill chuck, as shown and described. 